Cons:
1) At higher setting Dot is not crisp like Aimpoint or other brands.

2) Mount rattles loose with heavy use.

I have been using one as a beater optic for under $100 USD I can't bitch. Had it in the cold left it in water overnight and it still works. Been holding zero through all that. I do have a hard time seeing the dot on higher settings. The dot kinda "smears" out I wouldn't trust my life to one for playing at the range it does ok.